diff --git a/njuthesis.cls b/njuthesis.cls
index f40e6b86cd65d1f4b1295f20b65db4fb40fba379..4757ad12bec880c2fbfd0fda50323d11819870bb 100644
--- a/njuthesis.cls
+++ b/njuthesis.cls
@@ -15,6 +15,7 @@
   UTF8,
   scheme=chinese,
   linespread=1.625,
+  fontset=none,
   zihao=-4
   ]{ctexbook}[2018/04/01]